Best temp. to leave oven on over Yom Tov

[elikay]

also, some poskim who are not mekhil on hot plates may be mekhil with an inverted pan or some ate mekhil if you have hot plate on a timer and put on the food while it is still off

With inverted pan and dry and mevushal Kol tzorko its never a problem meikar hadin.

[Ergel]

With inverted pan and dry and mevushal Kol tzorko its never a problem meikar hadin.

-1 many poskim hold that its still a problem

[Dan]

-1 many poskim hold that its still a problem

So those poskim won't allow you to put a totally dry cooked item on top of a cholent pot on shabbos?

[Ergel]

So those poskim won't allow you to put a totally dry cooked item on top of a cholent pot on shabbos?

that's a din in shulchan aruch, no one will assur
btw, it has nothing to do with empty space

[Dan]

that's a din in shulchan aruch, no one will assur
btw, it has nothing to do with empty space

So then why is a cholent pot different than an empty pot on top of a blech?

[Ergel]

So then why is a cholent pot different than an empty pot on top of a blech?

I assumed you meant the chulent pot is full. that is called kdeirah al gabei kdeirah which is not derech bishul. I believe it's a machlokes rishonim whether that applies to an empty pot and general consensus is it doesn't

[Ergel]

and to be clear, there is a major difference between a blech and a hot plate. (almost) no one would be matir putting directly on a blech, even with an inverted pan. the kula is for a hot plate which people don't cook on and thereby is not derech bishul.
a blech only serves to make the for garuf v'katum which solves shema yechateh bgachalim (and helps for shehiyah, leaving not fully chokes food on from erev shabbos, and for chazarah (of fully cooked food)). however nesina btchila (putting food anew on the fire) has an added issue of mechzi kmivashel. a blech does not help for that.